moved program validation to _build
moved program validation to _build

RebeccaWPerry/vispy,julienr/vispy,sbtlaarzc/vispy,Eric89GXL/vispy,jay3sh/vispy,inclement/vispy,bollu/vispy,jdreaver/vispy,michaelaye/vispy,drufat/vispy,jay3sh/vispy,RebeccaWPerry/vispy,drufat/vispy,dchilds7/Deysha-Star-Formation,bollu/vispy,sbtlaarzc/vispy,ghisvail/vispy,Eric89GXL/vispy,bollu/vispy,hronoses/vispy,hronoses/vispy,kkuunnddaannkk/vispy,sh4wn/vispy,srinathv/vispy,drufat/vispy,kkuunnddaannkk/vispy,QuLogic/vispy,ghisvail/vispy,michaelaye/vispy,jdreaver/vispy,inclement/vispy,QuLogic/vispy,srinathv/vispy,julienr/vispy,Eric89GXL/vispy,inclement/vispy,jdreaver/vispy,michaelaye/vispy,RebeccaWPerry/vispy,julienr/vispy,sbtlaarzc/vispy,sh4wn/vispy,hronoses/vispy,jay3sh/vispy,srinathv/vispy,ghisvail/vispy,sh4wn/vispy,kkuunnddaannkk/vispy,dchilds7/Deysha-Star-Formation,dchilds7/Deysha-Star-Formation,QuLogic/vispy